Alloy for forging steel and method of producing same from nickel ore



j L. P. BuRRows.

ALLOY FOBEORGI'NG STEEL AND METHOD 0F PRODUCING SAME FROM NICKEL ORE.

' ArrucATlou min 11111. 2o. 1920. nsuewsn sEPLzz. 1921.

1,424,710, Paum1edAug.1,1922,

f 1 x is a v1 Denton UNITED STATES PATENT OFFICE.

LINUSPOB'IEB BUBROWS, OF ERIE, PENNSYLVANIA; LENAH B. ARCHER EXECUTRIX 0I SAID L. P. BURROWS, DECEASED.

ALLOY IQE mEGING STEEL AND METHOD 0F PRJODUCING SAME FROM NICKEL OBE.

Application Med January 20, 1980, Serial No. 352,775. Renewed September 22, 1921.

To all whom it may concern."

Be it known that I, LINUS PORTER BUR- Rows, a citizen of the United States, and resident of Erie, Pennsylvania, have 1nvented certain new and useful Improvements in an Alloy for Forging Steel and Method of Producin Same from Nickel Ore, of which the fo owing is a s ecification.

In an application filed me August 7. 1915, renewal No. 335,107, have described the treatment of nickel r-ore whereby I obtain a new roduct disintegrated by exposure to air. f is is particularly adapted for use after further treatment as an alloy in the production of forging steel.

I perceived that in order not to break up the molecule of steel so that it would not forge, I must reduce the chemical strength of the former product of my application aforesaid in order to produce an alloy for forging steel and to this end I subject the product of m former application to heat, with the resu t that I reduce its chemical stren h to the point required. This I accom ish without appreciably oxidizing the pro uct.

This treatment I carry out preferably in a furnace such as shown in the accompanying drawin in which Fig. 1 is a side elevation, Fig. ga horizontal section; Fig. 3 a cross section and Fig. 4 an end view.

The furnace has a bottom A with crown B, a. flue C, and doors D closing the front openin I provide a false bottom E divided lateral partitions e, and into the spaces fbrmed by these partitions project gas pi es extending from a header or main he gas pipes are alternately arranged so that the flame comes in at one side of one compartment while the other compartment is supplied by a jet from the opposite side. Openings e are provided opposite the position of the burners to allow or the exit of the products of combustion, and upon the false bottom I place the powder which is sub'ected to a low red heat a proximately between 1200 and 1600o result' in a reduction of the weight of the previo y recovered product approximately 20% by evaporation.

Specication of Letters Patent.

Patented Aug. 1, 1922.

Serial No. 502,548.

I find that by actual tests by the use of from one to two per cent of my alloy I am able to produce a forging steel equal in tensile strength and surpassing in many other useful qualities present steel produced by the use of three and one-half per cent ine` tallic nickel.

It will of course be understood that I use in the production of the alloy of the present application the process articularly described in my application o. 335,107, namely, the ore containing nickel is crushed and heated for five or six hours in the presence of the gaseous product of my Patent No. 680,- 313. The resulting product is then removed from its container and smelted in a Crucible. The slag is removed and the remaining metallic product broken up and exposed to the atmosphere until perfect disintegration takes place, usually from l2 to 24 hours` depending upon the size of the lumps. This reA su ts in a brownish black powder which forms the basis of the product of this ape plication.

I have found by the actual carrying out of the invention that the product of my former application comprising a very fine brownish black powder. must be further treated in order to produce my alloy for the production of a forging steel, and this treatment consists in subjecting the said product to evaporatin action at a low red heat without material oxidization, and that this treatment results in a new product which is in the form of a purplish powder.

What I claim is:

1. The herein described process consisting in subjecting crushed nickel ore to the action of a gaseous product in a closed chamber until the oxygen is removed from the ore, subjecting said treated and refined nickel ore to a smelting process; breaking u the metallic product and disintegrating t e same by exposing it to the atmosphere, taking the disintegrated material and subjecting it to an evaporating action at a low red heat without material oxidization resulting in the reduction of the weight of the air disintegrated product approximately twenty per cent.

2. The herein described process consist- 3. An improved article of manufactureproduced from nlckel ore in the form of a purplish powder and adapted for use as an 10 alloy for steel.

In testimony whereof, I affix my signature.

LINUS PORTER BURROWS. 

